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- Dictionaryjet propulsion/ˌdʒɛt prəˈpʌlʃn/
noun
- 1. propulsion by the backward ejection of a high-speed jet of gas or liquid.
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noun
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Thrust produced by passing a jet of matter in the opposite direction to the direction of motion
Jet propulsion is the propulsion of an object in one direction, produced by ejecting a jet of fluid in the opposite direction. By Newton's third law, the moving body is propelled in the opposite direction to the jet. Reaction engines operating on the principle of jet propulsion include the jet engine used for aircraft propulsion, the pump-jet used for marine propulsion, and the rocket engine and p... Wikipedia